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protection against UV emission or lamp shattering, 标准已经写的很清楚,只有tungsten halogen lamp or metal halide lamp 才需要protective shield,LED灯具明显是不适用的。! D! ^+ a5 X; C* W) [
1.2.71% h& {& @5 p6 Y t' J
self-shielded lamp
& J: s: W. O9 j3 D, n( Jtungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield, j: J) P2 | T9 [7 x' j ^+ K
for protection against UV emission or lamp shattering, z) m# ]# J3 E1 K
4.21 Protective shield
+ t& v9 e' k- {) N5 r* I4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten5 V; [# E& d9 k1 j! Z
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective+ U/ U- Q1 J+ J# x
shield. For tungsten halogen lamps, the shield shall be of glass.9 P# c( @' e1 O4 Q' {7 m, }$ Q1 l
Luminaires designed to be used with self-shielded lamps only are exempt from this
% i" e+ p/ _6 _# z Zrequirement, but shall be marked with the appropriate symbol (see Figure 1). |
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